1 The length of the rope m metres is used to braid three quarters. If the rope is cut into five equal segments, how long is each segment in metres?

The additive inverse of a number $x$ is a number $-x$ such that $x + (-x) = 0$.
For $-2$, the additive inverse is $-(-2) = 2$.

The multiplicative inverse (or reciprocal) of a number $x$ is a number $\frac{1}{x}$ such that $x \times \frac{1}{x} = 1$.
For $-2$, the multiplicative inverse is $\frac{1}{-2} = -\frac{1}{2}$.

The additive inverse of $-2$ is 2, and the multiplicative inverse of $-2$ is $-\frac{1}{2}$.
Comparing this with the given options, option C matches our findings.

The additive inverse is 2 and the multiplicative inverse is $-\frac{1}{2}$.
The correct option is C.